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Authors: G. P. Bailey and R. K. Harle

Affiliation: University of Cambridge, United Kingdom

ISBN: 978-989-758-205-9

Keyword(s): Stereo Vision, Ground Truth, Wearable Sensors, In-Field Assessment, Running, Gait, Foot Kinematics, Continuous Sensing.

Related Ontology Subjects/Areas/Topics: Computer Systems in Sports ; Multimedia and Information Technology ; Sport Science Research and Technology ; Sport Statistics and Analyses

Abstract: In-field validation of the accuracy of wearable sensors is desirable since algorithms that perform well in a laboratory setting may not perform as well in real-world use. However, the use cases can be challenging. For example, a foot worn wearable designed to measure foot trajectory should expect to be used in a variety of scenarios ranging from straightforward (running track) to challenging (a woodland area with many undulations). Typically the more challenging the scenario the more difficult it is to get ground truth with conventional systems. We describe a low-cost, highly-portable, point tracking system that can be used where space and infrastructure is limited. The system is built around a pair of commodity video cameras in a stereo setup. We demonstrate how to configure the cameras, a novel technique to approximate shutter synchronisation to sub-frame interval, and we benchmark the system indoors against gold-standard motion capture systems. For a runner 3 m from the cameras wer e able to recover their foot trajectory with a mean spatial deviation of 1.7±1.1 cm. (More)

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Paper citation in several formats:
P. Bailey G. and K. Harle R. (2016). A Portable, Inexpensive Point-Tracking System for Validation of Wearable Biomechanics Sensors.In Proceedings of the 4th International Congress on Sport Sciences Research and Technology Support - Volume 1: icSPORTS, ISBN 978-989-758-205-9, pages 115-123. DOI: 10.5220/0006082601150123

@conference{icsports16,
author={G. P. Bailey and R. K. Harle},
title={A Portable, Inexpensive Point-Tracking System for Validation of Wearable Biomechanics Sensors},
booktitle={Proceedings of the 4th International Congress on Sport Sciences Research and Technology Support - Volume 1: icSPORTS,},
year={2016},
pages={115-123},
publisher={ScitePress},
organization={INSTICC},
doi={10.5220/0006082601150123},
isbn={978-989-758-205-9},
}

TY - CONF

JO - Proceedings of the 4th International Congress on Sport Sciences Research and Technology Support - Volume 1: icSPORTS,
TI - A Portable, Inexpensive Point-Tracking System for Validation of Wearable Biomechanics Sensors
SN - 978-989-758-205-9
AU - P. Bailey G.
AU - K. Harle R.
PY - 2016
SP - 115
EP - 123
DO - 10.5220/0006082601150123

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